Add newline at the end of mlp_head.py for consistency and to adhere to coding standards

model/archs/mlp_head.py

@@ -36,6 +36,7 @@ class RgbMlp(nn.Module):
         x = F.relu(self.fc2(x))
         out = self.fc3(x)
         out = torch.tanh(out)
+
         return out